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ANSI PH3.617

80th Edition, 1991

Complete Document

DEFINITIONS, METHODS OF TESTING, AND SPECIFICATIONS FOR APPEARANCE IMPERFECTIONS OF OPTICAL ELEMENTS AND ASSEMBLIES

Includes all amendments and changes through Reaffirmation Notice , 1991


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Description / Abstract:

This standard describes appearance (nonfunctional) imperfections of optical elements and assemblies and provides methods of testing and specifying them. It applies to long-, round-, edge-, and area-type appearance imperfections on the surface of or within optical elements, and within optical assemblies such as photographic objectives. This standard provides methods for specifying imperfections. The maximum size, frequency, and intensity of imperfections allowed must be specified by the manufacturer or the user of optics, or both, with particular attention given to their possible functional (image quality)